Austral Cornflower - profile

Indicative distribution

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The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Rhaponticum australe
Conservation status in NSW: Presumed Extinct
Commonwealth status: Vulnerable
Profile last updated: 07 Sep 2017


Rhaponticum australe (Stemmacantha australis) is an erect herb that grows to 60cm in height. The branches are slightly woolly.

Leaves are oblanceolate, and toothed to deeply pinnatifid. The lower leaves are up to 18 cm long and 6 cm wide, reducing in size up the stem. The upper leaves are few, small and nearly sessile.

The heads are terminal, 3-6 cm in diameter, and ovoid-globose. The outer involucral bracts are with a circular appendage, the inner becoming long, and the innermost bracts as along as the florets and lanceolate, with scarcelty any scarious appendage. The corolla is purplish in colour.

Achenes are striate and 7-8 mm long. The pappus is 20 mm long.


Rhaponticum australe (Stemmacantha australis) is now presumed to be extinct in NSW, but is currently found in Queensland and Victoria.

Habitat and ecology

  • Flowers in spring through to autumn.
  • Is known to grow in heavy soils.


Recovery strategies

Activities to assist this species

IBRA Bioregion IBRA Subregion Known or predicted Geographic restrictions region